update-index: fix a memleak

diff --git a/t/t6010-merge-base.sh b/t/t6010-merge-base.sh
index abb5728b34b5eaba80d62f0e7d2b2c872dad4118..39b3238da211957eeec36a9c7b911cd5942de6dd 100755 (executable)
--- a/t/t6010-merge-base.sh
+++ b/t/t6010-merge-base.sh
@@ -230,6 +230,34 @@ test_expect_success 'criss-cross merge-base for octopus-step' '
        test_cmp expected.sorted actual.sorted
 '
 
+test_expect_success 'using reflog to find the fork point' '
+       git reset --hard &&
+       git checkout -b base $E &&
+
+       (
+               for count in 1 2 3
+               do
+                       git commit --allow-empty -m "Base commit #$count" &&
+                       git rev-parse HEAD >expect$count &&
+                       git checkout -B derived &&
+                       git commit --allow-empty -m "Derived #$count" &&
+                       git rev-parse HEAD >derived$count &&
+                       git checkout -B base $E || exit 1
+               done
+
+               for count in 1 2 3
+               do
+                       git merge-base --fork-point base $(cat derived$count) >actual &&
+                       test_cmp expect$count actual || exit 1
+               done
+
+       ) &&
+       # check that we correctly default to HEAD
+       git checkout derived &&
+       git merge-base --fork-point base >actual &&
+       test_cmp expect3 actual
+'
+
 test_expect_success 'merge-base --octopus --all for complex tree' '
        # Best common ancestor for JE, JAA and JDD is JC
        #             JE